APA استشهاد

Hehner, E. C. R. (1991). Logic of programming.

استشهاد بنمط شيكاغو

Hehner, Eric C R. Logic of Programming. Prentice-Hall of India Pvt. Ltd., New Delhi, 1991.

MLA استشهاد

Hehner, Eric C R. Logic of Programming. 1991.